/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  resv.c: Functions to reserve(jupe) a nick/channel.
 *
 *  Copyright (C) 2001-2002 Hybrid Development Team
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 *
 *  $Id: resv.c 475 2007-05-31 18:44:23Z jon $
 */

#include "stdinc.h"
#include "tools.h"
#include "common.h"
#include "fdlist.h"
#include "ircd.h"
#include "send.h"
#include "client.h"
#include "memory.h"
#include "numeric.h"
#include "resv.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd_defs.h"
#include "s_conf.h"

dlink_list resv_channel_list = { NULL, NULL, 0 };


/* create_channel_resv()
 *
 * inputs	- name of channel to create resv for
 *		- reason for resv
 *		- flag, 1 for from ircd.conf 0 from elsehwere
 * output	- pointer to struct ResvChannel
 * side effects	-
 */
struct ConfItem *
create_channel_resv(char *name, char *reason, int in_conf)
{
	struct ConfItem *conf = NULL;
	struct ResvChannel *resv_p = NULL;

	if(name == NULL || reason == NULL)
		return NULL;

	if(hash_find_resv(name))
		return NULL;

	if(strlen(reason) > REASONLEN)
		reason[REASONLEN] = '\0';

	conf = make_conf_item(CRESV_TYPE);
	resv_p = map_to_conf(conf);

	strlcpy(resv_p->name, name, sizeof(resv_p->name));
	DupString(conf->name, name);
	DupString(resv_p->reason, reason);
	resv_p->conf = in_conf;

	dlinkAdd(resv_p, &resv_p->node, &resv_channel_list);
	hash_add_resv(resv_p);

	return conf;
}

/* create_nick_resv()
 *
 * inputs	- name of nick to create resv for
 *		- reason for resv
 *		- 1 if from ircd.conf, 0 if from elsewhere
 * output	- pointer to struct ResvNick
 * side effects	-
 */
struct ConfItem *
create_nick_resv(char *name, char *reason, int in_conf)
{
	struct ConfItem *conf = NULL;
	struct MatchItem *resv_p = NULL;

	if(name == NULL || reason == NULL)
		return NULL;

	if(find_matching_name_conf(NRESV_TYPE, name, NULL, NULL, 0))
		return NULL;

	if(strlen(reason) > REASONLEN)
		reason[REASONLEN] = '\0';

	conf = make_conf_item(NRESV_TYPE);
	resv_p = map_to_conf(conf);

	DupString(conf->name, name);
	DupString(resv_p->reason, reason);
	resv_p->action = in_conf;

	return conf;
}

/* clear_conf_resv()
 *
 * inputs	- none
 * output	- none
 * side effects	- All resvs are cleared out
 */
void
clear_conf_resv(void)
{
	dlink_node *ptr = NULL, *next_ptr = NULL;

	DLINK_FOREACH_SAFE(ptr, next_ptr, resv_channel_list.head) delete_channel_resv(ptr->data);
}

/* delete_channel_resv()
 *
 * inputs	- pointer to channel resv to delete
 * output	- none
 * side effects	- given struct ResvChannel * is removed
 */
int
delete_channel_resv(struct ResvChannel *resv_p)
{
	struct ConfItem *conf = NULL;
	assert(resv_p != NULL);

	hash_del_resv(resv_p);
	dlinkDelete(&resv_p->node, &resv_channel_list);
	MyFree(resv_p->reason);
	conf = unmap_conf_item(resv_p);
	delete_conf_item(conf);

	return 1;
}

/* match_find_resv()
 *
 * inputs       - pointer to name
 * output       - pointer to a struct ResvChannel
 * side effects - Finds a reserved channel whose name matches 'name',
 *                if can't find one returns NULL.
 */
struct ResvChannel *
match_find_resv(const char *name)
{
	dlink_node *ptr = NULL;

	if(EmptyString(name))
		return NULL;

	DLINK_FOREACH(ptr, resv_channel_list.head)
	{
		struct ResvChannel *chptr = ptr->data;

		if(match_chan(name, chptr->name))
			return chptr;
	}

	return NULL;
}

/* report_resv()
 *
 * inputs	- pointer to client pointer to report to.
 * output	- NONE
 * side effects	- report all resvs to client.
 */
void
report_resv(struct Client *source_p)
{
	dlink_node *ptr;
	struct ConfItem *conf;
	struct ResvChannel *resv_cp;
	struct MatchItem *resv_np;

	DLINK_FOREACH(ptr, resv_channel_list.head)
	{
		resv_cp = ptr->data;
		sendto_one(source_p, form_str(RPL_STATSQLINE),
			   me.name, source_p->name,
			   resv_cp->conf ? 'Q' : 'q', resv_cp->name, resv_cp->reason);
	}

	DLINK_FOREACH(ptr, nresv_items.head)
	{
		conf = ptr->data;
		resv_np = map_to_conf(conf);

		sendto_one(source_p, form_str(RPL_STATSQLINE),
			   me.name, source_p->name,
			   resv_np->action ? 'Q' : 'q', conf->name, resv_np->reason);
	}
}

/* valid_wild_card_simple()
 *
 * inputs	- data to check for sufficient non-wildcard characters
 * outputs	- 1 if valid, else 0
 * side effects	- none
 */
int
valid_wild_card_simple(const char *data)
{
	const unsigned char *p = (const unsigned char *) data;
	int nonwild = 0;

	while(*p != '\0')
	{
		if((*p == '\\' && *++p) || (*p && !IsMWildChar(*p)))
			if(++nonwild == ConfigFileEntry.min_nonwildcard_simple)
				return 1;
		if(*p != '\0')
			++p;
	}

	return 0;
}
